Abstract: Systems, methods, apparatuses, and computer program products for semi-static pattern for change of cell for physical uplink control channel (PUCCH) are provided. One method may include configuring at least one user equipment (UE) with a configuration for more than one serving cell for physical uplink control channel (PUCCH) transmission within at least one physical uplink control channel (PUCCH) cell group, and configuring the at least one user equipment (UE) with a configuration for a time-domain pattern of an applicable physical uplink control channel (PUCCH) cell within the at least one physical uplink control channel (PUCCH) cell group.

Abstract: According to an aspect, there is disclosed a method that includes aligning, by a radio access network node wirelessly connected to at least two parent nodes and to a child node, an uplink reception timing associated with the child node with a downlink reception timing associated with a parent node of the at least two parent nodes.

Abstract: A method for adjusting transmit timing is disclosed. The method includes determining a reference timing advance value TAref, receiving a time offset parameter; and adjusting downlink transmit timing based on i) detected downlink receive timing of radio node and ii) the reference timing advance value TAref and the time offset parameter.

Abstract: A distributed unit, DU, of a radio access node configured to operate in a scenario where the DU is one of multiple DUs serving links to a multi-connected entity, acquires a first DU radio resource configuration for the DU, acquires a first link radio resource configuration corresponding to a first link of a multi-connectivity link of a multi-connected entity, wherein the first link is served by the DU, acquires a multiplexing configuration of the multi-connectivity link, and determines availability of at least one radio resource for the multi-connectivity link based on the first DU radio resource configuration, the first link radio resource configuration, and the multiplexing configuration.

Abstract: A technique of performing a handover procedure involves providing a proper timing adjustment indication for the UE performing RACH-less HO. Even though the discussion herein is on IAB scenarios and the idea takes an advantage of IAB nodes being in fixed locations (i.e., not moving in the network), it can be applied to UEs in general. The timing adjustment provided in performing a HO in an IAB network according to the improved techniques involves computing a timing advance (TA) to be used by an IAB node prior to executing HO to an alternative serving node. Such a use of a TA may enable a bypassing of a RACH procedure when accessing a cell.

Abstract: A method comprising: receiving configurations for a plurality of entry points for initial random access from an access point; determining random access resources for one or more entry points; and initiating, based on one or more criteria relating to properties of the apparatus or a network, at least one random access process with at least one of said entry points.

Abstract: Devices, methods and computer programs for a packet data unit session for physical uplink control channel transmission slot determination are disclosed. A client device receives from a network node device physical uplink control channel, PUCCH, configuration information for configuring more than one serving cell for a PUCCH transmission within a PUCCH cell group for the client device. The PUCCH configuration information comprises at least one set of relative slot offset values n for at least one target serving cell for the PUCCH transmission having a larger sub-carrier spacing, SCS, than an SCS of a reference cell. The client device utilizes the received PUCCH configuration information in selecting a PUCCH transmission slot for a target serving cell.

Abstract: According to the disclosure there is provided an apparatus comprising means for performing: receiving a configuration for a distributed unit of the apparatus for transmitting reference signals using a time domain resource of the apparatus, in accordance with a time domain transmission pattern; and receiving a configuration for a mobile termination unit of the apparatus for reception of reference signals using the time domain resource of the apparatus, in accordance with a time domain reception pattern; and selectively measuring received reference signals in dependence on a determination of whether measurement of received reference signals is required.

Abstract: Implementations of advanced frequency synchronization in a mobile integrated access backhaul deployment are disclosed. An apparatus includes at least one processor, and at least one non-transitory memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: estimate a change in a propagation delay at two time instants, measure a time period of the two time instants using a local clock of a network node, wherein the two time instants correspond to a known timing of a received signal, subtract the change of the propagation delay from the measured time period, calculate a difference between the subtracted time period and a known timing of the received signal; and convert the difference to a frequency offset value to synchronize downlink transmission frequency between the network node and a parent node.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to identify, by a user equipment of a communication network, downlink control information (DCI) indicating that at least one hybrid automatic repeat request-acknowledgment (HARQ-ACK) codebook scheduled earlier for transmission needs to be re-transmitted in a physical uplink control channel (PUCCH) occasion indicated by the DCI and identifying which at least one HARQ-ACK codebook scheduled earlier for transmission needs to be re-transmitted in the PUCCH occasion. And based on the DCI, prepare the PUCCH for re-transmitting the identified at least one HARQ-ACK codebook in the PUCCH occasion. Further, to determine and transmit, by a network equipment of a communication network, the DCI to the user equipment of the communication network and to receive the PUCCH for re-transmitting the at least one HARQ-ACK codebook in the PUCCH occasion from the user equipment.

Abstract: According to an example aspect of the present disclosure, there is provided a method comprising performing with a first node beam measurement for downlink beams received with the first node from at least one second node, scheduling with the first node at least one third node for uplink transmission to the first node, determining with the first node one or more of the downlink beams that can be received simultaneously with a beam of the at least one third node based at least partially on the scheduling of the at least one third node and the performing of the beam measurement, and transmitting with the first node results of the performed beam measurement wherein the results comprise an indication of the one or more determined downlink beams that can be received simultaneously with the beam of the at least one third node.

Abstract: Methods, apparatuses, and computer programs for timing enhancement for an integrated access and backhaul node are disclosed. A method includes receiving a control element that is used to determine a timing mode and/or associated timing information for an integrated access and backhaul node; determining the timing mode and/or the associated timing information for the integrated access and backhaul node, based on the control element; and applying the timing mode and/or the associated timing information for a subsequent uplink transmission for the integrated access and backhaul node.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a first network device in a communication network, allocation information for an availability of resources in the communication network; and sending, by the network device, to a second network device the allocation information for use in at least one of simultaneous transmission by the second network device to the first network device and a third device or simultaneous reception by the second network device from the first network device and a third device of at least one operation associated with the allocation information for allocation of the resources to the third device in the in the communication network.

Abstract: According to an aspect, there is disclosed a method that includes aligning, by a radio access network node wirelessly connected to at least two parent nodes and to a child node, an uplink reception timing associated with the child node with a downlink reception timing associated with a parent node of the at least two parent nodes.

Abstract: There is disclosed method for a network apparatus, the method comprising configuring the network apparatus to use a first transmit and/or receive pattern selected from a plurality of available transmit and/or receive patterns for performing discovery procedures with another network apparatus, wherein the first transmit and/or receive pattern is selected from said plurality in dependence on at least the mobility of said network apparatus and/or on the relative mobility of said network apparatus to said another network apparatus.

Abstract: Implementations of advanced frequency synchronization in a mobile integrated access backhaul deployment are disclosed. An apparatus includes at least one processor, and at least one non-transitory memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: estimate a change in a propagation delay at two time instants, measure a time period of the two time instants using a local clock of a network node, wherein the two time instants correspond to a known timing of a received signal, subtract the change of the propagation delay from the measured time period, calculate a difference between the subtracted time period and a known timing of the received signal; and convert the difference to a frequency offset value to synchronize downlink transmission frequency between the network node and a parent node.

Abstract: An apparatus including at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to: generate information for controlling dynamic allocation between backhaul and access links within time division duplex time slots; and convey the information to a relay node within an indicator in a downlink fixed time slot.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to identify, by a user equipment of a communication network, downlink control information (DCI) indicating that at least one hybrid automatic repeat request-acknowledgment (HARQ-ACK) codebook scheduled earlier for transmission needs to be re-transmitted in a physical uplink control channel (PUCCH) occasion indicated by the DCI and identifying which at least one HARQ-ACK codebook scheduled earlier for transmission needs to be re-transmitted in the PUCCH occasion. And based on the DCI, prepare the PUCCH for re-transmitting the identified at least one HARQ-ACK codebook in the PUCCH occasion. Further, to determine and transmit, by a network equipment of a communication network, the DCI to the user equipment of the communication network and to receive the PUCCH for re-transmitting the at least one HARQ-ACK codebook in the PUCCH occasion from the user equipment.

Abstract: A distributed unit, DU, of a radio access node configured to operate in a scenario where the DU is one of multiple DUs serving links to a multi-connected entity, acquires a first DU radio resource configuration for the DU, acquires a first link radio resource configuration corresponding to a first link of a multi-connectivity link of a multi-connected entity, wherein the first link is served by the DU, acquires a multiplexing configuration of the multi-connectivity link, and determines availability of at least one radio resource for the multi-connectivity link based on the first DU radio resource configuration, the first link radio resource configuration, and the multiplexing configuration.

Abstract: A method for adjusting transmit timing is disclosed. The method includes determining a reference timing advance value TAref, receiving a time offset parameter; and adjusting downlink transmit timing based on i) detected downlink receive timing of radio node and ii) the reference timing advance value TAref and the time offset parameter.